* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    outline: 0;
}

em,
i {
    font-style: normal;
}

li {
    list-style: none;
}

img {
    border: 0;
    vertical-align: middle;
}

button {
    cursor: pointer;
}

a {
    color: rgba(0, 0, 0, .7);
    text-decoration: none;
}

/* 滚动条样式 */
*::-webkit-scrollbar {
    width: 5px!important;
    height: 5px!important;
}

*::-webkit-scrollbar-thumb {
    border-radius: 3px !important;
    background-color: #aaa!important;
}

*::-webkit-scrollbar-thumb:hover {
    background-color: #888!important;
}

*::-webkit-scrollbar-track-piece {
    background: #eee!important;
}